CVE-2021-21966 : An information disclosure vulnerability exists in the HTTP Server /ping.html fun

An information disclosure vulnerability exists in the HTTP Server /ping.html functionality of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. A specially-crafted HTTP request can lead to an uninitialized read. An attacker can send an HTTP request to trigger this vulnerability.

Published 2022-02-16 17:15:10

Updated 2022-07-21 11:22:45

Source Talos

View at NVD, CVE.org

Vulnerability category: Information leak

Products affected by CVE-2021-21966

TI » Simplelink Cc32xx Software Development Kit
Versions before (<) 5.30.00.08
cpe:2.3:a:ti:simplelink_cc32xx_software_development_kit:*:*:*:*:*:*:*:*
Matching versions
When used together with: TI » Cc3120 » Version: N/A
When used together with: TI » Cc3130 » Version: N/A
When used together with: TI » Cc3135 » Version: N/A
When used together with: TI » Cc3220r » Version: N/A
When used together with: TI » Cc3220s » Version: N/A
When used together with: TI » Cc3220sf » Version: N/A
When used together with: TI » Cc3230s » Version: N/A
When used together with: TI » Cc3230sf » Version: N/A
When used together with: TI » Cc3235s » Version: N/A
When used together with: TI » Cc3235sf » Version: N/A
TI » Cc3100 Firmware
Versions before (<) 1.0.1.15-2.15.0.1
cpe:2.3:o:ti:cc3100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: TI » Cc3100 » Version: N/A
TI » Cc3200 Firmware
Versions before (<) 1.0.1.15-2.15.0.1
cpe:2.3:o:ti:cc3200_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: TI » Cc3200 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-21966

EPSS FAQ

2.02%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 83 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21966

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
5.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	Talos
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2021-21966

CWE-457 Use of Uninitialized Variable

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Assigned by: talos-cna@cisco.com (Secondary)
CWE-908 Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-21966

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1393

TALOS-2021-1393 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence
Exploit;Third Party Advisory
https://www.ti.com/lit/an/swra740/swra740.pdf?ts=1645536893264&

Access Denied
Vendor Advisory

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Vulnerability Details : CVE-2021-21966

Products affected by CVE-2021-21966

Exploit prediction scoring system (EPSS) score for CVE-2021-21966

CVSS scores for CVE-2021-21966

CWE ids for CVE-2021-21966

References for CVE-2021-21966